Sea surface temperture reconstruction for ODP Site 189-1172
Relative to the present day, meridional temperature gradients in the Early Eocene age (~56-53 Myr ago) were unusually low, with slightly warmer equatorial regions (Pearson et al., 2007, doi:10.1130/G23175A.1 ) but with much warmer subtropical Arctic (Sluijs et al., 2008, doi:10.1029/2007PA001495) an...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.769678 2024-09-15T17:40:47+00:00 Sea surface temperture reconstruction for ODP Site 189-1172 Bijl, Peter K Schouten, Stefan Sluijs, Appy Reichart, Gert-Jan Zachos, James C Brinkhuis, Henk MEDIAN LATITUDE: -43.959503 * MEDIAN LONGITUDE: 149.928434 * SOUTH-BOUND LATITUDE: -43.959750 * WEST-BOUND LONGITUDE: 149.928260 * NORTH-BOUND LATITUDE: -43.959230 * EAST-BOUND LONGITUDE: 149.928610 * DATE/TIME START: 2000-04-22T00:00:00 * DATE/TIME END: 2000-05-03T21:00:00 2009 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.769678 https://doi.org/10.1594/PANGAEA.769678 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.769678 https://doi.org/10.1594/PANGAEA.769678 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Bijl, Peter K; Schouten, Stefan; Sluijs, Appy; Reichart, Gert-Jan; Zachos, James C; Brinkhuis, Henk (2009): Early Palaeogene temperature evolution of the southwest Pacific Ocean. Nature, 461, 776-779, https://doi.org/10.1038/nature08399 189-1172 189-1172A COMPCORE Composite Core DRILL Drilling/drill rig Joides Resolution Leg189 Ocean Drilling Program ODP Tasman Sea dataset publication series 2009 ftpangaea https://doi.org/10.1594/PANGAEA.76967810.1038/nature08399 2024-07-24T02:31:21Z Relative to the present day, meridional temperature gradients in the Early Eocene age (~56-53 Myr ago) were unusually low, with slightly warmer equatorial regions (Pearson et al., 2007, doi:10.1130/G23175A.1 ) but with much warmer subtropical Arctic (Sluijs et al., 2008, doi:10.1029/2007PA001495) and mid-latitude (Sluijs et al., 2007, doi:10.1038/nature06400) climates. By the end of the Eocene epoch (~34 Myr ago), the first major Antarctic ice sheets had appeared (Zachos et al., 1992, doi:10.1130/0091-7613(1992)020<0569:EOISEO>2.3.CO;2; Barker et al., 2007, doi:10.1016/j.dsr2.2007.07.027), suggesting that major cooling had taken place. Yet the global transition into this icehouse climate remains poorly constrained, as only a few temperature records are available portraying the Cenozoic climatic evolution of the high southern latitudes. Here we present a uniquely continuous and chronostratigraphically well-calibrated TEX86 record of sea surface temperature (SST) from an ocean sediment core in the East Tasman Plateau (palaeolatitude ~65° S). We show that southwest Pacific SSTs rose above present-day tropical values (to ~34° C) during the Early Eocene age (~53 Myr ago) and had gradually decreased to about 21° C by the early Late Eocene age (~36 Myr ago). Our results imply that there was almost no latitudinal SST gradient between subequatorial and subpolar regions during the Early Eocene age (55-50 Myr ago). Thereafter, the latitudinal gradient markedly increased. In theory, if Eocene cooling was largely driven by a decrease in atmospheric greenhouse gas concentration Zachos et al. (2008, doi:10.1038/nature06588), additional processes are required to explain the relative stability of tropical SSTs given that there was more significant cooling at higher latitudes. Other/Unknown Material Antarc* Antarctic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(149.928260,149.928610,-43.959230,-43.959750) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
189-1172 189-1172A COMPCORE Composite Core DRILL Drilling/drill rig Joides Resolution Leg189 Ocean Drilling Program ODP Tasman Sea |
spellingShingle |
189-1172 189-1172A COMPCORE Composite Core DRILL Drilling/drill rig Joides Resolution Leg189 Ocean Drilling Program ODP Tasman Sea Bijl, Peter K Schouten, Stefan Sluijs, Appy Reichart, Gert-Jan Zachos, James C Brinkhuis, Henk Sea surface temperture reconstruction for ODP Site 189-1172 |
topic_facet |
189-1172 189-1172A COMPCORE Composite Core DRILL Drilling/drill rig Joides Resolution Leg189 Ocean Drilling Program ODP Tasman Sea |
description |
Relative to the present day, meridional temperature gradients in the Early Eocene age (~56-53 Myr ago) were unusually low, with slightly warmer equatorial regions (Pearson et al., 2007, doi:10.1130/G23175A.1 ) but with much warmer subtropical Arctic (Sluijs et al., 2008, doi:10.1029/2007PA001495) and mid-latitude (Sluijs et al., 2007, doi:10.1038/nature06400) climates. By the end of the Eocene epoch (~34 Myr ago), the first major Antarctic ice sheets had appeared (Zachos et al., 1992, doi:10.1130/0091-7613(1992)020<0569:EOISEO>2.3.CO;2; Barker et al., 2007, doi:10.1016/j.dsr2.2007.07.027), suggesting that major cooling had taken place. Yet the global transition into this icehouse climate remains poorly constrained, as only a few temperature records are available portraying the Cenozoic climatic evolution of the high southern latitudes. Here we present a uniquely continuous and chronostratigraphically well-calibrated TEX86 record of sea surface temperature (SST) from an ocean sediment core in the East Tasman Plateau (palaeolatitude ~65° S). We show that southwest Pacific SSTs rose above present-day tropical values (to ~34° C) during the Early Eocene age (~53 Myr ago) and had gradually decreased to about 21° C by the early Late Eocene age (~36 Myr ago). Our results imply that there was almost no latitudinal SST gradient between subequatorial and subpolar regions during the Early Eocene age (55-50 Myr ago). Thereafter, the latitudinal gradient markedly increased. In theory, if Eocene cooling was largely driven by a decrease in atmospheric greenhouse gas concentration Zachos et al. (2008, doi:10.1038/nature06588), additional processes are required to explain the relative stability of tropical SSTs given that there was more significant cooling at higher latitudes. |
format |
Other/Unknown Material |
author |
Bijl, Peter K Schouten, Stefan Sluijs, Appy Reichart, Gert-Jan Zachos, James C Brinkhuis, Henk |
author_facet |
Bijl, Peter K Schouten, Stefan Sluijs, Appy Reichart, Gert-Jan Zachos, James C Brinkhuis, Henk |
author_sort |
Bijl, Peter K |
title |
Sea surface temperture reconstruction for ODP Site 189-1172 |
title_short |
Sea surface temperture reconstruction for ODP Site 189-1172 |
title_full |
Sea surface temperture reconstruction for ODP Site 189-1172 |
title_fullStr |
Sea surface temperture reconstruction for ODP Site 189-1172 |
title_full_unstemmed |
Sea surface temperture reconstruction for ODP Site 189-1172 |
title_sort |
sea surface temperture reconstruction for odp site 189-1172 |
publisher |
PANGAEA |
publishDate |
2009 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.769678 https://doi.org/10.1594/PANGAEA.769678 |
op_coverage |
MEDIAN LATITUDE: -43.959503 * MEDIAN LONGITUDE: 149.928434 * SOUTH-BOUND LATITUDE: -43.959750 * WEST-BOUND LONGITUDE: 149.928260 * NORTH-BOUND LATITUDE: -43.959230 * EAST-BOUND LONGITUDE: 149.928610 * DATE/TIME START: 2000-04-22T00:00:00 * DATE/TIME END: 2000-05-03T21:00:00 |
long_lat |
ENVELOPE(149.928260,149.928610,-43.959230,-43.959750) |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Supplement to: Bijl, Peter K; Schouten, Stefan; Sluijs, Appy; Reichart, Gert-Jan; Zachos, James C; Brinkhuis, Henk (2009): Early Palaeogene temperature evolution of the southwest Pacific Ocean. Nature, 461, 776-779, https://doi.org/10.1038/nature08399 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.769678 https://doi.org/10.1594/PANGAEA.769678 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.76967810.1038/nature08399 |
_version_ |
1810486831856222208 |